A test of the poliovirus endgame
The global withdrawal of the Sabin type 2 poliovirus vaccine is a test of the feasibility of the plan, declared by the World Health Assembly in 1988, to eradicate all polioviruses.
OPV
Papua New Guinea is no longer polio-free
Last week we discussed the case of polio in Venezuela that turned out not to be polio. Unfortunately the same cannot be concluded about a bona fide case of polio in Papua New Guinea. Surveillance for acute flaccid paralysis (AFP) revealed a 6 year old boy in Papua New Guinea with lower limb weakness on …
Venezuela is still polio-free
In early June it was widely reported that the first case of poliomyelitis in 30 years had been identified in Venezuela (see this Tech Times report as an example). Fortunately these reports were incorrect, and Venezuela remains free of polio. Let€™s unpack exactly what happened.
Three countries endemic for poliovirus
I cannot let September pass without noting that 34 years ago this month, I arrived at Columbia University to start my laboratory to do research on poliovirus (pictured). That virus is no longer the sole object of our attention – we are wrapping up some work on poliovirus and our attention has shifted elsewhere. But this is …
TWiV 403: It’s not easy being vaccine
The TWiV team takes on an experimental plant-based poliovirus vaccine, contradictory findings on the efficacy of Flumist, waning protection conferred by Zostavax, and a new adjuvanted subunit zoster vaccine. You can find TWiV #403 at microbe.tv/twiv, or listen below. [powerpress url=”http://traffic.libsyn.com/twiv/TWiV403.mp3″] Click arrow to play Download TWiV 403 (70 MB .mp3, 96 min) Subscribe (free): iTunes, RSS, email Become a patron of TWiV!
Whole plant cells producing viral capsid protein as a poliovirus vaccine candidate
Although the use of the live, attenuated (Sabin) poliovirus vaccines has been instrumental in nearly eradicating the virus from the planet, the rare reversion to virulence of these strains has lead to the World Health Organization to recommend their replacement with inactivated poliovirus vaccine (IPV). Unfortunately IPV is also not without shortcomings, including high cost, failure …
Whole plant cells producing viral capsid protein as a poliovirus vaccine candidate Read More »